Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
App Overview
Xanh SM: Book EV rides
Xanh SM - The leading Smart and Sustainable All-Electric App for Ride-Hailing, Food Ordering, and Parcel Delivery in Vietnam
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
14,378 ratings · Top 5%
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included15 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Differentiate and validate
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Xanh SM: Book EV rides: map the core Travel workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Offer more vehicle types and pricing tiers.
Assumption to check: Limited ride options compared to traditional apps
Validate with people who use this workflow before building.
Hypothesis 2
Implement real-time tracking and notifications.
Assumption to check: Inconsistent driver availability
Validate with people who use this workflow before building.
Hypothesis 3
Introduce transparent pricing with no hidden fees.
Assumption to check: High service fees can deter users
Validate with people who use this workflow before building.
Hypothesis 4
Add loyalty programs or rewards for frequent users.
Assumption to check: Lack of user engagement features
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
Xanh SM - The leading Smart and Sustainable All-Electric App for Ride-Hailing, Food Ordering, and Parcel Delivery in Vietnam Xanh SM is the only all-electric ride-hailing, food delivery, and delivery application in Vietnam, offering a green, convenient, and sustainable mobility experience with 100% modern VinFast electric cars and electric scooters. Since its launch on April 14, 2023, Xanh SM has quickly captured the No. 1 position in the market, serving over 50 million customers in 34 provinces and cities in Vietnam and expanding to 4 countries: Vietnam, Laos, Indonesia, and the Philippines. The aspiration for "Go Green Global" drives Xanh SM to continuously strive, realizing the vision of a green transportation future worldwide. With the mission "To provide green, efficient, and sustainable transportation solutions," Xanh SM is committed to bringing the optimal travel and delivery experiences. How to Use Xanh SM in 3 Simple Steps - Step 1: Download the app and register an account. - Step 2: Choose a service (ride-hailing, food ordering or delivery) and enter the required details. - Step 3: Confirm your booking with available promotions, select a payment method, and enjoy a 5-star ride! Current Services Offered by Xanh SM - Electric Car Rides: Experience smooth, luxurious, and premium electric taxi rides. - Electric Motorbike Rides: Flexible, fast, and perfect for city commuting. - Express Delivery: Safe and secure delivery service for all needs. - Xanh SM Ngon: Food delivery and ordering service via mobile app. Why Choose Xanh SM? - 5 Star Green Rides: A variety of options from Xanh SM Bike to Xanh SM electric taxis, catering to individuals, families, and businesses. - Express Delivery: Fast, secure, and flexible with options such as door-to-door delivery, cash-on-delivery (COD), and multi-point delivery. - Flexible Payment Methods: Accepting e-wallets, bank cards, corporate cards, Xanh e-card, and cash. - Daily Promotions: Regular updates on discounts and offers for users. - Loyalty Program: Earn VPoint rewards for rides and shopping within the Vingroup ecosystem. - Exclusive Membership Packages: Get up to 2 million VND in savings when subscribing to membership plans. Achievements and Awards - "Outstanding Brand in the Transportation Services Sector" at the Better Choice Awards. - "Fast-Growing Business" and "Inspiring Brand" at the Asia Pacific Enterprise Awards. - ESG Award at ASOCIO Awards - "Environmental Product/Service Award" at Human Act Prize & "Most Loved Ride-Hailing Service" and "Most Loved Delivery App" at Tinh Tế Awards 2024. - "Top 10 Impressive Products & Services in Vietnam 2024" by VnEconomy. Join Hands for a Greener Future With every Xanh SM trip, you contribute to the Green Future Fund (1,000 VND per taxi ride, 100 VND per bike/express delivery), supporting our goal of achieving net-zero emissions by 2050. Connect with Xanh SM - Website: www.xanhsm.com - Facebook: facebook.com/XanhSMOfficial - Zalo OA: zalo.me/XanhSMOfficial - LinkedIn: linkedin.com/company/GreenSmartMobility - Email: [email protected] - Hotline: 1900 2097 Download Xanh SM today and experience eco-friendly, sustainable mobility!
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Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
React Native
Expo
Firebase
Zustand
React Navigation
Axios
BUILD KIT DIFFICULTY
Expert
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.
